And stanley b



(No Model.) 2 Sheets-Sheet 1.

B. 0. VANDUZEN.

PUMP.

No. 268342.- Patented Dec. 12, 1882.

2 Sheets-Sheet 2.

' (No Model.)

B. G. VA NDUZEN.

' PUMP.

Patented Dec.1'2, 1882.

nrejltov Q M57 W UNITED I STATES PATENT DFFIGE.

l BENJAMIN G. VANDUZEN, OF CINCINNATI, OHIO, ASSIGNOR TO HERBERT D. LAFFERTY, OF NASHVILLE, TENNESSEE, AND STANLEY B. LAFFEBTY,

OF DAVENPORT, IOWA.

PUMP.

, SPECIFICATION forming part of Letters Patent No. 268,842, dated December 12, 1882. V

- Application filed May 26, 1882. (No model.)

Tocll whom it may concern Beit known that I, BENJAMIN QVANDUZEN, of the cityof Oincinnati,in the countyot Hamilton and State of Ohio, have invented certain new and useful Improvements in Pumps, of which the following is a specification.

My invention relates more particularly to that class of pumps known asdouble-acting I pumps, and in which it is desired to lift the various plungers and valves from the well independently of the remaining portions of the pump; and a principal feature of my invention has reference to the means for retaining the pistons or plungers and the cylinders in position with relation to each other, and for re leasing them from such retention.

In the drawings forming part of this specification I show other features of invention for which I make no claim in this specification, as they are the subjects of claims in another application for Letters Patent.

Figurel of the drawings is an elevation of a pump embodying the principle of my inventions, the parts below the body being represented in section. Fig.2 is an elevation of the body of the pump viewed in a line at right angles to that seen in Fig. 1. Fig. 3 is an enlarged central section through the cylinders, pistons, and discharge -pipe and grippingliooks. Fig. dis a horizontal section taken at the line :0 or of Fig. 3.

y A 1s thestandard of thepump, which is properly secured to the base A','or otherwise secured to the curb. To this body is connected the upper end of the discharge-pipe B, to the lower end of which is connected the pumpingcylinders 00. The cylinder 0 is provided with a lateral extension, a, into which is screwed the lower end of the discharge-pipe B,thus placing the cylinders at one side of the said discharge-pipe. This extension a has a passage, a, which establishes communication between the cylinders and the discharge-pipe. The cylinder 0 preferably extends a short distance above the passage a, and this upper end is provided with a surrounding flange, b, projecting outwardly from the outer face of said cylinder, and being beveled or rounded at its upper outer corner, as shown. The upper cyling flange, I), in the periphery of which is an elastic packing, D. At the lower end of the cylinder 0 are a number of lugs or an open flange, d, located around the periphery of the cylinder, so that when the cylinder 0 is in position with relation to the cylinder U these guiding lugs or flange will rest against the inner face of the cylinder 0 and keep the latter cylinder in line with cylinder 0. hen the space S between the cylinders is to be employed as an air-chamber the flange (I, when employed, must be an open one. The packing D forms a tight joint between the two cylinders, and below this packing the air-space between the cylinders serves as an air-chamber, S, which promotes a steady flow of'water from the pump. From the sides of cylinder 0' project the lateral brackets c, to which are pivoted the upper ends of the dogs or catches E,

the lower. or free ends of which are provided ate respectively in the cylinders G C.

On the pump-rod H is placed a sliding collar, H, which is capable of being raised and lowered on said rod, and may be secured in the desired position by means of a set-screw, h,

the purpose of which collar or equivalent meansis to force the cylinder 0 to the proper position with reference to the cylinder 0, and this it does by coming in contact with the upper end of the cylinder 0, when.the rod is disconnected from the pump-handle and properly lowered, and the rod being forced farther down, the cylinder 0 is also forced down until the heads F on the catches E have passed the V flange or projection b on the upper end of the cylinder 0. From theinner face of the catches E project books or stops e, which prevent the cylinder 0 from being forced too far down into the cylinder 0. When the cylinder 0 has been introduced into the upper end of the cylinder 0 until the heads F of the catches E 2 V ecaeae have passed the flange b the cylinder is retained firmly in the position until the catches E have been disengaged from the flange b. The disengagement of the catches E from the flange b is accomplished in the following manher: The flange-b is provided at the sides of the cylinder with the notchesf, each of which is a little wider than the face of the heads F of the catches E, the bottom of said notches coinciding with the outer face of the cylinder 0. When the cylinder 0 is secured in the cylinder 0 the catches and notches occupy the relative positions shown in the drawings;

and when the cylinder 0 and the pistons are to be removed from the well the cylinder 0 is turned by means of the pump-rod H untilthe catches E are opposite to the notchesf, when the cylinder 0, together with the pistons,may be lifted free from the cylinder 0.

Any suitable means to cause the cylinder 0' to be readily turned by the pump-rod may be employed; but I prefer to employ the following: The upper piston, G, has an upwardly extended block, 9, which is made square or otherwise angularin form, or provided with a suitable projection, and fits, when the pump-rod is raised, into an opening of similar shape in the upper end of the cylinder 0, and by this construction the upper cylinder, O,'may be readily turned by the pump-rod after the latter has been disconnected from the pump-handle.

If desired, the catches E may be cast or otherwise formed solidly with the cylinder 0, in which event it will be necessary, when the cylinder 0 is to be introduced into the cylinder 0, ,to see that these catches or lugs are opposite to the notch f in the flange b, and after the-cylinder has been sufficiently depressed it is turned so that the heads F will engage with the flange.

If desired, a floating air-chamber, K, may be placed within the discharge-pipe B; but this may be omitted and the air-space d around the lower end of the cylinder 0 will serve as the air-chamber.

One or more of the various features of my invention may be used in connection with the particular form of pump shown, or with other forms and descriptions of pumps, so far as the said features may be applicable thereto.

The principal feature of my invention consists of the hooks or catches arranged to catch over or engage with a projection or projections of the pump-cylinder to be lifted, and notches in said projection, or spaces between said projections, through which spaces or notches, when the cylinder is rotated, the books or catches may pass, and the cylinder then be in a condition to be elevated, thus dispensing with mechanism for moving the catches or books away from the said flange, projection, or projections. This feature of my invention is applicable by a few obvious mechanical changes to pumps in which one cylinder only is employed, and in such event the hook or books will be employed to withdraw the upper cylinder-head. If preferred, one book only may be employed. When desired, the books may be attached to thelower cylinder or tube, or to some other suitable objective point, corresponding changes being made in the shape of the hooks, and the projections for them to engage, and the space or spaces between said projections being properly located elsewhere.

What I claim as new and of my invention, and desire to secure by Letters Patent,'is as follows: v

1. In a double-acting pump, the combination of the lower cylinder, C, provided with a flange, I), having notchesff, and the cylinder 0, provided with hooks E, arranged to engage with the flange b, and to be disengaged therefrom when the cylinder 0 has been turned till 7 said hooks are opposite to the notchesff, substantially as and for the purposes specified.

2. Thecylinder O,connected to the dischargepipe B, and provided with flange b, having notchesff, in combination with the cylinder 0, having catches E, pivoted to the side thereof, and the pump-rod H, provided with means whereby it-is caused to engage with and turn the cylinder 0, substantially as and for the purposes specified.

' 3. The combination of the cylinder G, having recessed flanges, and the cylinder 0 having hooks E, and the pump-rod H, having attached'thereto an angular block, g, theupper end of the cylinder 0 having an opening corresponding in shape and size to said angular block, substantially as and for the purposes specified.

4. The combination of the hook, hung and supported substantially as described, and the stationary cylinder having projection for engaging the hook and having space for liberating said hook, and means for turning said hook with that'portion of the pump which upholds it, substantially as and for the purposes specified.

5. The combination of the hook hung to that part of the pump-cylinder which is removable, along with the pump rod and piston, and the stationary cylinder having a projection for engaging the hook, and provided with space through which the hook may be liberated, and means for depressing said hook and causing the latter to be turned at will, substantially as and for the purposes specified.

6. The combination of the hook and that part of the pump-cylinder which is removable, along with the pump rod and piston, and the stationary cylinder having the projection to engage the hook, and the collar H, afixed to the pump-rod to cause the hook and its supporting partof the pump to be depressed by the depression of the pump-rod, substantially as and for the purposes specified.

' BENJAMIN O. VANDUZEN.

Attest:

E. R. HILL, WM. E. JONES. 

